const mongoose = require("mongoose");

// console.log(mongoose)
// 1. 连接mongo数据库管理系统
mongoose.connect("mongodb://127.0.0.1:27017/sh2014",{
    useNewUrlParser: true,
    useUnifiedTopology: true
});

// 2. 监听连接状态
mongoose.connection.on("connected", ()=>{
    console.log("连接成功");
})
mongoose.connection.on("disconnected", ()=>{
    console.log("连接断开");
})
mongoose.connection.on("error", ()=>{
    console.log("连接失败");
})

module.exports = mongoose;

